Your blue circle is your range. There is no way to make that 35m or 100feet any larger. There are rules on portals, and if you find one that fits into one of these categories, as a beta tester, you should be reporting this to Google here:
New Portal Submissions - Ingress Help
Reporting an Issue with a Portal
- Portal(s) in an inaccessible, private or dangerous location
- Portal(s) without photos
- Duplicate portals
- Overlapping portals
- Portal(s) located in the wrong place
- Other portal issue
Personally I think a 70 meter...200 foot diameter circle should be more than ample. There are some tricky ones downtown here, mainly due to GPS bounce, but there are some circumstances where I wish it were smaller. For example when you attack a portal that has several other portals in close proximity, if you are attacking a specific portal and happen to attack an adjacent portal, both portals retaliate, and cause double damage. A level 6 player holds 8,000 XP, I've been hit with 2,500 damage from one attack on a level 7 portal (which is the highest you can be attacked). So essentially, you could be "killed" in 4 attacks, which means running around and refilling your meter, which takes time. Time is precious when battle reports are lighting up in ALL chat, and whoever's resonators are getting destroyed are getting emails. The last thing you want is somebody getting tipped off, racing down to your location and waiting until you destroy the last resonator, and then they fill up all 8 slots. Easy AP for them, wasted ammo for you....not to mention frustrating. Even if you're fast, sometimes after you destroy the last one, it seems the game hangs for a bit, and that's all the time they need.