Nice to hear you're enjoying it.
About your complaints though:
- Low-leveled users are at a slight disadvantage currently, but that won't be for too long! Soon there will be tournaments, which will allow all players to participate in them and even equally in some, because there will also be level-capped tournaments. Most tournaments won't have very low level caps, but some will and that is where you can win!
Besides, you can already win quite a lot in comparison to the big guys. If you wish to compete at champion level you may want to have maxed cards, but that's not all that matters. You can still compete at your own level, win and upgrade your team, slowly growing through the ranks. If you look at other blockchain games, this is really not pay to win, it actually puts you at a significant growth advantage over larger players.
- Leveling summoners is sometimes annoying, but it's not all that bad, really. If you level for example 7 monsters and 1 summoner, you're probably going to spend twice as much on those monsters as on that summoner. Yup, it may be annoying, but that's how it works. I may be able to trade you some summoners if you wish, since in total, I got about 171 beta summoners I'm not using.