I wouldn't bother restarting.
1. The most important thing is to find an alliance that wars and does events. That goes a long way to getting resources and chances for new bots via premium crystals. Find a group that matches how much and how hard you want to play. If you aren't in an alliance, you are dead in the water.
2. Always be upgrading. Spend your coins to max out your build bots and have them working 100% of the time. Get your defenses up. Nothing like grinding for some resources only to have them be raided. In turn, raid like crazy one zone higher than the suggested one as long as it's yellow and not red. The reward tier will be higher. You may lose but you are more likely to walk away with more loot if you focus on attacking resource buildings.
The big misconception is that you can't do much with 3* bots and that 4*+ is the only thing that matters. It won't for a long time yet until your whole base is maxed and you're in Cybertron league for wars. I have about half the 4*s and I still use my 3*s constantly, even in war.
But again, your alliance is the key to enjoying the game with some buddies and growing. Only restart if you want to join the Cons.
