Well, they could asked Kalani (Tactical Droid on Rebels). He should know where to find the Battle Droid and secret factories. Even taking the last Battle Droid in production or trying to repair them with Alliance's Ressources.
I'll comment on this tomorrow assuming my link isn't rerouted. I'm actually too drunk RN, but this was a matter of Holocrons rather than skills, & Yoda wanted to preserve the future. Something only both Sith Lords & Jedi Grand Masters are granted clear sight on. Almost impossible.
It's realistic in terms of a tyrant's psychology, but as a threat - an order carried out by elites post mortem, it is utterly psychologically unrealistic.
Bru lego star wars is non cannon and is lego go play star wars battlefront 2. Those things can kill you in 8 seconds and can tire out the stamia of a jedi really quick
Also, Jedi was weakened by their own delusion that Jedi code and teaching are correct, sacred. But The Force didn't care about Jedi code. Dooku had a chance to enlighten such aspects. But such enlightenment temporally weakened his fundamental spirit, so that gave a chance of corruption to Palpatine.
When Yoda overpowered Sidious, he finally escaped. Joda only could realise that if he chased Sidious he had to counter the whole Grand Army of the Republic
Sidious was afraid of Yoda. Yoda was definitely strong enough to beat Sidious. However he did not expect Sidious to be as powerful as he was and so knowledgeable about the force. The Sith from 1,000 years before did not focus ALL their effort, ALL their knowledge and ALL their training into one apprentice. Palpatine is the accumulation of 1,000 years of Sith knowledge and training. Not only that but Sidious himself went out into the galaxy and sought out many Sith artifacts and places where the force had left strong impressions. He studied Sith magic and many rituals. Palpatine was deeply immersed in the dark side of the force. Yoda was not prepared for that as the video stated he was expected something of what the Sith were like 1,000 years ago. However there were plenty of moments in that fight we saw Yoda gain ground and prevail over Sidious. At that point no one had overcome his incredibly powerful force maelstrom and even at point blank Sidious overtook Yoda for but a moment but after that Yoda knew exactly what to do. The only problem was the blowback was something Yoda was not prepared for. He fell a long way down and was so exhausted. If not for that the fight would have probably ended shortly after with Yoda coming out on top.
Palpatine was trained under plagueis specifically because he was one of the strongest force sensitive lines there was. Personally I dont think it was that yoda couldn't defeat him.. I think he quickly realized that if he were to do so, he would have had to kill him. Which was not the jedi way.. The darkside was immensely powerful at that point in time, which feeds into my theory (and yodas) that the force was being balanced towards the Dark.. misread, the prophecy may have been.. if this is the case, it was palpatines destiny to defeat Yoda.